Use apt instead of github action

`awalsh128/cache-apt-pkgs-action@latest` requires `sudo`

Author: BenjaminRodenberg

.github/workflows/build-and-test.yml

@@ -36,10 +36,8 @@ jobs:
         run:  |
           apt update
       - name: Install scipy (see https://github.com/precice/fenics-adapter/issues/189)
-        uses: awalsh128/cache-apt-pkgs-action@latest
-        with:
-          packages: python3-scipy
-          version: 1.0
+        run:  |
+          apt install python3-scipy
       - name: Install fake precice
         run:  |
           mkdir -p precice